Morphology

A perennial grass with culms 30-100 cm tall. Sheaths smooth, weakly keeled. Ligules 5-9 mm. Blades 10-15 cm long, 3-8 mm wide.

Inflorescences racemes or panicles, 15-35 cm long, 1-2 cm wide. Branches 5.5-8 cm, solitary or in pairs. Spikelets 20-45 mm long, 2.5-3 mm wide, cylindrical and terete except slightly laterally compressed at anthesis, with 5-12 florets. Lower glumes 1.3-4.5 mm. Upper glumes 3-7 mm. Lemmas 6-8.5 mm, scabridulous, 7-veined, gradually tapering from near midlength to the narrowly acute or acuminate apices. Paleas 0.7-3 mm longer than the lemmas, tips parallel, with 0.4-1 mm teeth. Anthers 3, 1-2 mm.

Name/Synonymy Info

Glyceria acutiflora Torrey, Fl. n. middle United States 1:104 (1823). Festuca acutiflora (Torrey) Bigelow, Fl. boston., ed. 3, 39 (1840); Panicularia acutiflora (Torrey) Kuntze, Revisio gen. pl. 2:783 (1891). SYN: [1] U.S.A., New York: in overflowed meadows, Bloomingdale, Fishkill, etc.; [2] U.S.A., New Jersey: near Hoboken; [3] U.S.A., Massachusetts: Deerfield; G.E. Cooley.

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References

M.E. Barkworth & L.K. Anderton. 2007. Glyceria in Flora of North America, volume 24. Oxford University Press.

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